<template>
    <!--引入container布局-->
    <el-container class="home-container">
        <!--头部-->
        <el-header>
            <div>
                <img src="../assets/2.jpg" class="logo_img" alt />
                <span>个人运动平台</span>
            </div>
            <el-button type="info" @click="logout">安全退出</el-button>
        </el-header>
        <!--主体-->
        <el-container>
            <!--侧边栏-->
            <el-aside width="isCollapse?'640px':'200px'">
                <!--伸缩按钮-->
                <div class="toggle-button" @click="toggleCollapase">|||</div>
                <el-menu background-color="#545c64" text-color="#fff" active-text-color="#ffd04b"
                unique-opened :collapse="isCollapse" :collapse-transition="false" :router="true"
                default-active="activePath">
                    <!--一级菜单-->
                <el-submenu :index="item.id+''" v-for="item in menuList" :key="item.id">
                    <template slot="title">
                        <i :class="iconsObject[item.id]"></i>
                        <span>{{item.title}}</span>
                    </template>
                    <!--二级菜单-->
                    <el-menu-item :index="it.path" v-for="it in item.sList" :key="it.id"  @click="saveNavState(it.path+'')">
                        <template slot="title">
                            <i :class="iconsObject[it.id]"></i>
                            <span>{{it.title}}</span>
                        </template>
                        </el-menu-item>
                    </el-submenu>
            </el-menu>
            </el-aside>
            <!--主题内容-->
            <el-main>
                <!--路由占位符-->
                <router-view></router-view>
            </el-main>
        </el-container>
    </el-container>
</template>

<script>
    export default {
        data() {
            return {
                // 左侧菜单
                menuList: [],
                iconsObject: {
                    '100':'iconfont iconguanliyuan',
                    '200':'iconfont iconsport',
                    '101':'iconfont icondenglu',
                    '102':'iconfont iconmima',
                    '103':'iconfont iconsport',
                    '104':'iconfont iconshangpin',
                    '201':'iconfont iconshu',
                    '202':'iconfont iconkaluli',
                    '203':'iconfont iconshiwu',
                    '204':'iconfont icondenglu',
                },
                isCollapse:false,
                // 被激活的连接
                activePath:'/welcome',
            }
        },
        // 类似onload
        created() {
            this.getMenuList();
            this.activePath = window.sessionStorage.getItem('activePath');// 取出session里的访问路径
        },
        methods: {
            logout() {
                window.sessionStorage.clear();  //清除session
                this.$router.push("/login");    //回到首页
            },
            // 获取所有的导航菜单
            async getMenuList(){
                const {data:res} = await this.$http.get("menus");
                console.log(res);
                if( res.flag != 200) return this.$message.error("操作失败！！！");
                this.menuList = res.menus;  //数据回填
            },
            // 切换菜单折叠与展开
            toggleCollapase(){
                this.isCollapse = !this.isCollapse;
            },
            // 保存二级菜单的路径
            saveNavState(activePath){
                window.sessionStorage.setItem('activePath',activePath);// 存放点击的二级菜单
                this.activePath = activePath;// 给点击的菜单添加高亮
            },
        }
    };
</script>

<style lang="less" scoped>
    /*头样式*/
    .el-header {
        background-color: #373d41;
        display: flex;
        justify-content: space-between;// 左右贴边
        padding-left: 0%;// 左边界
        align-items: center;// 水平
        color: #fff;
        font-size: 20px;
        > div { //左侧div加布局
            display: flex;
            align-items: center;
            span {
                margin-left: 15px;
            }
        }
    }
    /*侧边栏*/
    .el-aside {
        background-color: #333744;
        .el-menu{
            border-right: none;// 对其右边框
        }
    }
    /*主体样式*/
    .el-main {
        background-color: #eaedf1;
    }

    .home-container {
        height: 100%;
    }
    .logo_img {
        width: 10%;
        height: 100%;
    }
    .iconfont{
        margin-right: 10px;
    }
    .toggle-button{
        background-color:#4A5064;
        font-size: 10px;
        line-height: 24px;
        color:#fff;
        text-align: center;
        letter-spacing: 0.2em;
        cursor: pointer;// 显示鼠标指针为：小手
    }
</style>